參數資料
型號: MC68HC05CJ4FB
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP44
封裝: PLASTIC, QFP-44
文件頁數: 22/114頁
文件大小: 4047K
代理商: MC68HC05CJ4FB
GENERAL RELEASE SPECIFICATION
GENERAL DESCRIPTION
MC68HC(7)05CJ4
1-6
Rev. 2.1
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1.4.7 PB0 through PB7
Port B is an 8-bit bidirectional port which does not share any of its pins with other
subsystems. The port B data register is at $0001 and the data direction register
(DDRB) is at $0005. Reset does not affect the data register, but clears the data
direction register, thereby returning the port to inputs. Writing a one to a DDRB bit
sets the corresponding port bit to output mode.
1.4.8 PC0 through PC7
Port C is an 8-bit bidirectional port which does not share any of its pins with other
subsystems. The port C data register is at $0002 and the data direction register
(DDRC) is at $0006. Reset does not affect the data register, but clears the data
direction register, thereby returning the port to inputs. Writing a one to a DDRC bit
sets the corresponding port bit to output mode.
1.4.9 PD0 through PD7
Port D is an 8-bit input-only port. PD7:PD6 pins are shared with the I2C subsystem,
PD5:PD2 are shared with the SPI subsystem and PD1:PD0 are shared with the
SCI subsystem. The port D data register is at $0003 and there is no data direction
register. Reset does not affect the data register.
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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